Hear The Voicemail Left By the Wash. Dad Moments Before He Chopped and Burned His Sons

GRAHAM, Wash. (AP) -- Before setting his house ablaze and killing himself and his two young sons, Josh Powell left a voicemail for family members saying he couldn't live without the boys and didn't want to go on anymore.

(Related: Autopsy reveals Powell used hatchet on his sons before burning them)

ABC News obtained what it says was a voicemail Powell left for his family members. In the recording played Tuesday on "Good Morning America" Powell also said he was calling to say goodbye and apologize.

"I'm sorry to everyone I've hurt," he is heard saying. "Goodbye."

Powell, the husband of missing Utah woman Susan Powell, died along with his children Sunday in Washington. An autopsy showed the children also suffered hatchet wounds to their necks. He was a person of interest in his wife's 2009 disappearance.

As authorities work to determine exactly why Powell committed the murders at the Washington residence, investigators said they're no closer to answering the question they've had for two years.

"We still haven't identified or found where Susan Powell is," said West Valley, Utah, Police Chief Buzz Nielsen, who is in charge of the investigation into the young mother's disappearance.

The father of the 5- and 7-year-old boys painted himself as a tortured man, ridiculed without reason in the disappearance of his wife, steadfastly insisting he was innocent until the end.